The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 17, 2025
Filed:
Aug. 02, 2024
Rtx Corporation, Farmington, CT (US);
Brandon M. Evans, San Antonio, TX (US);
Neil J. Terwilliger, Cheshire, CT (US);
RTX CORPORATION, Farmington, CT (US);
Abstract
An aircraft propulsion system includes a core engine that includes a combustor where a cryogenic fuel is mixed with compressed air and ignited to generate an exhaust gas flow, a propulsive fan driven by shaft power that is generated by the core engine, a cryogenic fuel system that includes a cryogenic fuel storage tank, a fuel flow path where a fuel flow is circulated from upstream in a direction downstream toward the combustor of the core engine, a bottoming compressor where a gaseous fuel flow is compressed, a first heat exchanger where the gaseous fuel flow exhausted from the bottoming compressor is heated, a turboexpander where the gaseous fuel flow from the first heat exchanger is expanded to generate shaft power, and a mixer where the gaseous fuel flow mixes with and heats a liquid fuel flow to generate a gaseous fuel flow for communication to the bottoming compressor.